X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ArmPlatformPkg%2FDrivers%2FNorFlashDxe%2FNorFlashFvbDxe.c;fp=ArmPlatformPkg%2FDrivers%2FNorFlashDxe%2FNorFlashFvbDxe.c;h=0000000000000000000000000000000000000000;hp=9cdd85096a463f69b3b864cecdeaf247e65f4f73;hb=c2d1cf1bce3973a4bd99d60d85e7f3ff30a9f90f;hpb=e5908945368163bb15c8c1a49745f4c1138f1ab4 diff --git a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c deleted file mode 100644 index 9cdd85096a..0000000000 --- a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c +++ /dev/null @@ -1,800 +0,0 @@ -/*++ @file NorFlashFvbDxe.c - - Copyright (c) 2011 - 2020, ARM Ltd. All rights reserved.
- - SPDX-License-Identifier: BSD-2-Clause-Patent - - --*/ - -#include - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include "NorFlashDxe.h" - -STATIC EFI_EVENT mFvbVirtualAddrChangeEvent; -STATIC UINTN mFlashNvStorageVariableBase; - -/// -/// The Firmware Volume Block Protocol is the low-level interface -/// to a firmware volume. File-level access to a firmware volume -/// should not be done using the Firmware Volume Block Protocol. -/// Normal access to a firmware volume must use the Firmware -/// Volume Protocol. Typically, only the file system driver that -/// produces the Firmware Volume Protocol will bind to the -/// Firmware Volume Block Protocol. -/// - -/** - Initialises the FV Header and Variable Store Header - to support variable operations. - - @param[in] Ptr - Location to initialise the headers - -**/ -EFI_STATUS -InitializeFvAndVariableStoreHeaders ( - IN NOR_FLASH_INSTANCE *Instance - ) -{ - EFI_STATUS Status; - VOID* Headers; - UINTN HeadersLength; - EFI_FIRMWARE_VOLUME_HEADER *FirmwareVolumeHeader; - VARIABLE_STORE_HEADER *VariableStoreHeader; - - HeadersLength = sizeof(EFI_FIRMWARE_VOLUME_HEADER) + sizeof(EFI_FV_BLOCK_MAP_ENTRY) + sizeof(VARIABLE_STORE_HEADER); - Headers = AllocateZeroPool(HeadersLength); - - // FirmwareVolumeHeader->FvLength is declared to have the Variable area AND the FTW working area AND the FTW Spare contiguous. - ASSERT(PcdGet32(PcdFlashNvStorageVariableBase) + PcdGet32(PcdFlashNvStorageVariableSize) == PcdGet32(PcdFlashNvStorageFtwWorkingBase)); - ASSERT(PcdGet32(PcdFlashNvStorageFtwWorkingBase) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) == PcdGet32(PcdFlashNvStorageFtwSpareBase)); - - // Check if the size of the area is at least one block size - ASSERT((PcdGet32(PcdFlashNvStorageVariableSize) > 0) && (PcdGet32(PcdFlashNvStorageVariableSize) / Instance->Media.BlockSize > 0)); - ASSERT((PcdGet32(PcdFlashNvStorageFtwWorkingSize) > 0) && (PcdGet32(PcdFlashNvStorageFtwWorkingSize) / Instance->Media.BlockSize > 0)); - ASSERT((PcdGet32(PcdFlashNvStorageFtwSpareSize) > 0) && (PcdGet32(PcdFlashNvStorageFtwSpareSize) / Instance->Media.BlockSize > 0)); - - // Ensure the Variable area Base Addresses are aligned on a block size boundaries - ASSERT(PcdGet32(PcdFlashNvStorageVariableBase) % Instance->Media.BlockSize == 0); - ASSERT(PcdGet32(PcdFlashNvStorageFtwWorkingBase) % Instance->Media.BlockSize == 0); - ASSERT(PcdGet32(PcdFlashNvStorageFtwSpareBase) % Instance->Media.BlockSize == 0); - - // - // EFI_FIRMWARE_VOLUME_HEADER - // - FirmwareVolumeHeader = (EFI_FIRMWARE_VOLUME_HEADER*)Headers; - CopyGuid (&FirmwareVolumeHeader->FileSystemGuid, &gEfiSystemNvDataFvGuid); - FirmwareVolumeHeader->FvLength = - PcdGet32(PcdFlashNvStorageVariableSize) + - PcdGet32(PcdFlashNvStorageFtwWorkingSize) + - PcdGet32(PcdFlashNvStorageFtwSpareSize); - FirmwareVolumeHeader->Signature = EFI_FVH_SIGNATURE; - FirmwareVolumeHeader->Attributes = (EFI_FVB_ATTRIBUTES_2) ( - EFI_FVB2_READ_ENABLED_CAP | // Reads may be enabled - EFI_FVB2_READ_STATUS | // Reads are currently enabled - EFI_FVB2_STICKY_WRITE | // A block erase is required to flip bits into EFI_FVB2_ERASE_POLARITY - EFI_FVB2_MEMORY_MAPPED | // It is memory mapped - EFI_FVB2_ERASE_POLARITY | // After erasure all bits take this value (i.e. '1') - EFI_FVB2_WRITE_STATUS | // Writes are currently enabled - EFI_FVB2_WRITE_ENABLED_CAP // Writes may be enabled - ); - FirmwareVolumeHeader->HeaderLength = sizeof(EFI_FIRMWARE_VOLUME_HEADER) + sizeof(EFI_FV_BLOCK_MAP_ENTRY); - FirmwareVolumeHeader->Revision = EFI_FVH_REVISION; - FirmwareVolumeHeader->BlockMap[0].NumBlocks = Instance->Media.LastBlock + 1; - FirmwareVolumeHeader->BlockMap[0].Length = Instance->Media.BlockSize; - FirmwareVolumeHeader->BlockMap[1].NumBlocks = 0; - FirmwareVolumeHeader->BlockMap[1].Length = 0; - FirmwareVolumeHeader->Checksum = CalculateCheckSum16 ((UINT16*)FirmwareVolumeHeader,FirmwareVolumeHeader->HeaderLength); - - // - // VARIABLE_STORE_HEADER - // - VariableStoreHeader = (VARIABLE_STORE_HEADER*)((UINTN)Headers + FirmwareVolumeHeader->HeaderLength); - CopyGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid); - VariableStoreHeader->Size = PcdGet32(PcdFlashNvStorageVariableSize) - FirmwareVolumeHeader->HeaderLength; - VariableStoreHeader->Format = VARIABLE_STORE_FORMATTED; - VariableStoreHeader->State = VARIABLE_STORE_HEALTHY; - - // Install the combined super-header in the NorFlash - Status = FvbWrite (&Instance->FvbProtocol, 0, 0, &HeadersLength, Headers); - - FreePool (Headers); - return Status; -} - -/** - Check the integrity of firmware volume header. - - @param[in] FwVolHeader - A pointer to a firmware volume header - - @retval EFI_SUCCESS - The firmware volume is consistent - @retval EFI_NOT_FOUND - The firmware volume has been corrupted. - -**/ -EFI_STATUS -ValidateFvHeader ( - IN NOR_FLASH_INSTANCE *Instance - ) -{ - UINT16 Checksum; - EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader; - VARIABLE_STORE_HEADER *VariableStoreHeader; - UINTN VariableStoreLength; - UINTN FvLength; - - FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER*)Instance->RegionBaseAddress; - - FvLength = PcdGet32(PcdFlashNvStorageVariableSize) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) + - PcdGet32(PcdFlashNvStorageFtwSpareSize); - - // - // Verify the header revision, header signature, length - // Length of FvBlock cannot be 2**64-1 - // HeaderLength cannot be an odd number - // - if ( (FwVolHeader->Revision != EFI_FVH_REVISION) - || (FwVolHeader->Signature != EFI_FVH_SIGNATURE) - || (FwVolHeader->FvLength != FvLength) - ) - { - DEBUG ((EFI_D_INFO, "%a: No Firmware Volume header present\n", - __FUNCTION__)); - return EFI_NOT_FOUND; - } - - // Check the Firmware Volume Guid - if( CompareGuid (&FwVolHeader->FileSystemGuid, &gEfiSystemNvDataFvGuid) == FALSE ) { - DEBUG ((EFI_D_INFO, "%a: Firmware Volume Guid non-compatible\n", - __FUNCTION__)); - return EFI_NOT_FOUND; - } - - // Verify the header checksum - Checksum = CalculateSum16((UINT16*)FwVolHeader, FwVolHeader->HeaderLength); - if (Checksum != 0) { - DEBUG ((EFI_D_INFO, "%a: FV checksum is invalid (Checksum:0x%X)\n", - __FUNCTION__, Checksum)); - return EFI_NOT_FOUND; - } - - VariableStoreHeader = (VARIABLE_STORE_HEADER*)((UINTN)FwVolHeader + FwVolHeader->HeaderLength); - - // Check the Variable Store Guid - if (!CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) && - !CompareGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid)) { - DEBUG ((EFI_D_INFO, "%a: Variable Store Guid non-compatible\n", - __FUNCTION__)); - return EFI_NOT_FOUND; - } - - VariableStoreLength = PcdGet32 (PcdFlashNvStorageVariableSize) - FwVolHeader->HeaderLength; - if (VariableStoreHeader->Size != VariableStoreLength) { - DEBUG ((EFI_D_INFO, "%a: Variable Store Length does not match\n", - __FUNCTION__)); - return EFI_NOT_FOUND; - } - - return EFI_SUCCESS; -} - -/** - The GetAttributes() function retrieves the attributes and - current settings of the block. - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Attributes Pointer to EFI_FVB_ATTRIBUTES_2 in which the attributes and - current settings are returned. - Type EFI_FVB_ATTRIBUTES_2 is defined in EFI_FIRMWARE_VOLUME_HEADER. - - @retval EFI_SUCCESS The firmware volume attributes were returned. - - **/ -EFI_STATUS -EFIAPI -FvbGetAttributes( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - OUT EFI_FVB_ATTRIBUTES_2 *Attributes - ) -{ - EFI_FVB_ATTRIBUTES_2 FlashFvbAttributes; - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS(This); - - FlashFvbAttributes = (EFI_FVB_ATTRIBUTES_2) ( - - EFI_FVB2_READ_ENABLED_CAP | // Reads may be enabled - EFI_FVB2_READ_STATUS | // Reads are currently enabled - EFI_FVB2_STICKY_WRITE | // A block erase is required to flip bits into EFI_FVB2_ERASE_POLARITY - EFI_FVB2_MEMORY_MAPPED | // It is memory mapped - EFI_FVB2_ERASE_POLARITY // After erasure all bits take this value (i.e. '1') - - ); - - // Check if it is write protected - if (Instance->Media.ReadOnly != TRUE) { - - FlashFvbAttributes = FlashFvbAttributes | - EFI_FVB2_WRITE_STATUS | // Writes are currently enabled - EFI_FVB2_WRITE_ENABLED_CAP; // Writes may be enabled - } - - *Attributes = FlashFvbAttributes; - - DEBUG ((DEBUG_BLKIO, "FvbGetAttributes(0x%X)\n", *Attributes)); - - return EFI_SUCCESS; -} - -/** - The SetAttributes() function sets configurable firmware volume attributes - and returns the new settings of the firmware volume. - - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Attributes On input, Attributes is a pointer to EFI_FVB_ATTRIBUTES_2 - that contains the desired firmware volume settings. - On successful return, it contains the new settings of - the firmware volume. - Type EFI_FVB_ATTRIBUTES_2 is defined in EFI_FIRMWARE_VOLUME_HEADER. - - @retval EFI_SUCCESS The firmware volume attributes were returned. - - @retval EFI_INVALID_PARAMETER The attributes requested are in conflict with the capabilities - as declared in the firmware volume header. - - **/ -EFI_STATUS -EFIAPI -FvbSetAttributes( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - IN OUT EFI_FVB_ATTRIBUTES_2 *Attributes - ) -{ - DEBUG ((DEBUG_BLKIO, "FvbSetAttributes(0x%X) is not supported\n",*Attributes)); - return EFI_UNSUPPORTED; -} - -/** - The GetPhysicalAddress() function retrieves the base address of - a memory-mapped firmware volume. This function should be called - only for memory-mapped firmware volumes. - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Address Pointer to a caller-allocated - EFI_PHYSICAL_ADDRESS that, on successful - return from GetPhysicalAddress(), contains the - base address of the firmware volume. - - @retval EFI_SUCCESS The firmware volume base address was returned. - - @retval EFI_NOT_SUPPORTED The firmware volume is not memory mapped. - - **/ -EFI_STATUS -EFIAPI -FvbGetPhysicalAddress ( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - OUT EFI_PHYSICAL_ADDRESS *Address - ) -{ - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS(This); - - DEBUG ((DEBUG_BLKIO, "FvbGetPhysicalAddress(BaseAddress=0x%08x)\n", Instance->RegionBaseAddress)); - - ASSERT(Address != NULL); - - *Address = mFlashNvStorageVariableBase; - return EFI_SUCCESS; -} - -/** - The GetBlockSize() function retrieves the size of the requested - block. It also returns the number of additional blocks with - the identical size. The GetBlockSize() function is used to - retrieve the block map (see EFI_FIRMWARE_VOLUME_HEADER). - - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Lba Indicates the block for which to return the size. - - @param BlockSize Pointer to a caller-allocated UINTN in which - the size of the block is returned. - - @param NumberOfBlocks Pointer to a caller-allocated UINTN in - which the number of consecutive blocks, - starting with Lba, is returned. All - blocks in this range have a size of - BlockSize. - - - @retval EFI_SUCCESS The firmware volume base address was returned. - - @retval EFI_INVALID_PARAMETER The requested LBA is out of range. - - **/ -EFI_STATUS -EFIAPI -FvbGetBlockSize ( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - IN EFI_LBA Lba, - OUT UINTN *BlockSize, - OUT UINTN *NumberOfBlocks - ) -{ - EFI_STATUS Status; - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS(This); - - DEBUG ((DEBUG_BLKIO, "FvbGetBlockSize(Lba=%ld, BlockSize=0x%x, LastBlock=%ld)\n", Lba, Instance->Media.BlockSize, Instance->Media.LastBlock)); - - if (Lba > Instance->Media.LastBlock) { - DEBUG ((EFI_D_ERROR, "FvbGetBlockSize: ERROR - Parameter LBA %ld is beyond the last Lba (%ld).\n", Lba, Instance->Media.LastBlock)); - Status = EFI_INVALID_PARAMETER; - } else { - // This is easy because in this platform each NorFlash device has equal sized blocks. - *BlockSize = (UINTN) Instance->Media.BlockSize; - *NumberOfBlocks = (UINTN) (Instance->Media.LastBlock - Lba + 1); - - DEBUG ((DEBUG_BLKIO, "FvbGetBlockSize: *BlockSize=0x%x, *NumberOfBlocks=0x%x.\n", *BlockSize, *NumberOfBlocks)); - - Status = EFI_SUCCESS; - } - - return Status; -} - -/** - Reads the specified number of bytes into a buffer from the specified block. - - The Read() function reads the requested number of bytes from the - requested block and stores them in the provided buffer. - Implementations should be mindful that the firmware volume - might be in the ReadDisabled state. If it is in this state, - the Read() function must return the status code - EFI_ACCESS_DENIED without modifying the contents of the - buffer. The Read() function must also prevent spanning block - boundaries. If a read is requested that would span a block - boundary, the read must read up to the boundary but not - beyond. The output parameter NumBytes must be set to correctly - indicate the number of bytes actually read. The caller must be - aware that a read may be partially completed. - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Lba The starting logical block index from which to read. - - @param Offset Offset into the block at which to begin reading. - - @param NumBytes Pointer to a UINTN. - At entry, *NumBytes contains the total size of the buffer. - At exit, *NumBytes contains the total number of bytes read. - - @param Buffer Pointer to a caller-allocated buffer that will be used - to hold the data that is read. - - @retval EFI_SUCCESS The firmware volume was read successfully, and contents are - in Buffer. - - @retval EFI_BAD_BUFFER_SIZE Read attempted across an LBA boundary. - On output, NumBytes contains the total number of bytes - returned in Buffer. - - @retval EFI_ACCESS_DENIED The firmware volume is in the ReadDisabled state. - - @retval EFI_DEVICE_ERROR The block device is not functioning correctly and could not be read. - - **/ -EFI_STATUS -EFIAPI -FvbRead ( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - IN EFI_LBA Lba, - IN UINTN Offset, - IN OUT UINTN *NumBytes, - IN OUT UINT8 *Buffer - ) -{ - EFI_STATUS TempStatus; - UINTN BlockSize; - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS(This); - - DEBUG ((DEBUG_BLKIO, "FvbRead(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Instance->StartLba + Lba, Offset, *NumBytes, Buffer)); - - TempStatus = EFI_SUCCESS; - - // Cache the block size to avoid de-referencing pointers all the time - BlockSize = Instance->Media.BlockSize; - - DEBUG ((DEBUG_BLKIO, "FvbRead: Check if (Offset=0x%x + NumBytes=0x%x) <= BlockSize=0x%x\n", Offset, *NumBytes, BlockSize )); - - // The read must not span block boundaries. - // We need to check each variable individually because adding two large values together overflows. - if ((Offset >= BlockSize) || - (*NumBytes > BlockSize) || - ((Offset + *NumBytes) > BlockSize)) { - DEBUG ((EFI_D_ERROR, "FvbRead: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize )); - return EFI_BAD_BUFFER_SIZE; - } - - // We must have some bytes to read - if (*NumBytes == 0) { - return EFI_BAD_BUFFER_SIZE; - } - - // Decide if we are doing full block reads or not. - if (*NumBytes % BlockSize != 0) { - TempStatus = NorFlashRead (Instance, Instance->StartLba + Lba, Offset, *NumBytes, Buffer); - if (EFI_ERROR (TempStatus)) { - return EFI_DEVICE_ERROR; - } - } else { - // Read NOR Flash data into shadow buffer - TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, Buffer); - if (EFI_ERROR (TempStatus)) { - // Return one of the pre-approved error statuses - return EFI_DEVICE_ERROR; - } - } - return EFI_SUCCESS; -} - -/** - Writes the specified number of bytes from the input buffer to the block. - - The Write() function writes the specified number of bytes from - the provided buffer to the specified block and offset. If the - firmware volume is sticky write, the caller must ensure that - all the bits of the specified range to write are in the - EFI_FVB_ERASE_POLARITY state before calling the Write() - function, or else the result will be unpredictable. This - unpredictability arises because, for a sticky-write firmware - volume, a write may negate a bit in the EFI_FVB_ERASE_POLARITY - state but cannot flip it back again. Before calling the - Write() function, it is recommended for the caller to first call - the EraseBlocks() function to erase the specified block to - write. A block erase cycle will transition bits from the - (NOT)EFI_FVB_ERASE_POLARITY state back to the - EFI_FVB_ERASE_POLARITY state. Implementations should be - mindful that the firmware volume might be in the WriteDisabled - state. If it is in this state, the Write() function must - return the status code EFI_ACCESS_DENIED without modifying the - contents of the firmware volume. The Write() function must - also prevent spanning block boundaries. If a write is - requested that spans a block boundary, the write must store up - to the boundary but not beyond. The output parameter NumBytes - must be set to correctly indicate the number of bytes actually - written. The caller must be aware that a write may be - partially completed. All writes, partial or otherwise, must be - fully flushed to the hardware before the Write() service - returns. - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance. - - @param Lba The starting logical block index to write to. - - @param Offset Offset into the block at which to begin writing. - - @param NumBytes The pointer to a UINTN. - At entry, *NumBytes contains the total size of the buffer. - At exit, *NumBytes contains the total number of bytes actually written. - - @param Buffer The pointer to a caller-allocated buffer that contains the source for the write. - - @retval EFI_SUCCESS The firmware volume was written successfully. - - @retval EFI_BAD_BUFFER_SIZE The write was attempted across an LBA boundary. - On output, NumBytes contains the total number of bytes - actually written. - - @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled state. - - @retval EFI_DEVICE_ERROR The block device is malfunctioning and could not be written. - - - **/ -EFI_STATUS -EFIAPI -FvbWrite ( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - IN EFI_LBA Lba, - IN UINTN Offset, - IN OUT UINTN *NumBytes, - IN UINT8 *Buffer - ) -{ - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS (This); - - return NorFlashWriteSingleBlock (Instance, Instance->StartLba + Lba, Offset, NumBytes, Buffer); -} - -/** - Erases and initialises a firmware volume block. - - The EraseBlocks() function erases one or more blocks as denoted - by the variable argument list. The entire parameter list of - blocks must be verified before erasing any blocks. If a block is - requested that does not exist within the associated firmware - volume (it has a larger index than the last block of the - firmware volume), the EraseBlocks() function must return the - status code EFI_INVALID_PARAMETER without modifying the contents - of the firmware volume. Implementations should be mindful that - the firmware volume might be in the WriteDisabled state. If it - is in this state, the EraseBlocks() function must return the - status code EFI_ACCESS_DENIED without modifying the contents of - the firmware volume. All calls to EraseBlocks() must be fully - flushed to the hardware before the EraseBlocks() service - returns. - - @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL - instance. - - @param ... The variable argument list is a list of tuples. - Each tuple describes a range of LBAs to erase - and consists of the following: - - An EFI_LBA that indicates the starting LBA - - A UINTN that indicates the number of blocks to erase. - - The list is terminated with an EFI_LBA_LIST_TERMINATOR. - For example, the following indicates that two ranges of blocks - (5-7 and 10-11) are to be erased: - EraseBlocks (This, 5, 3, 10, 2, EFI_LBA_LIST_TERMINATOR); - - @retval EFI_SUCCESS The erase request successfully completed. - - @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled state. - - @retval EFI_DEVICE_ERROR The block device is not functioning correctly and could not be written. - The firmware device may have been partially erased. - - @retval EFI_INVALID_PARAMETER One or more of the LBAs listed in the variable argument list do - not exist in the firmware volume. - - **/ -EFI_STATUS -EFIAPI -FvbEraseBlocks ( - IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This, - ... - ) -{ - EFI_STATUS Status; - VA_LIST Args; - UINTN BlockAddress; // Physical address of Lba to erase - EFI_LBA StartingLba; // Lba from which we start erasing - UINTN NumOfLba; // Number of Lba blocks to erase - NOR_FLASH_INSTANCE *Instance; - - Instance = INSTANCE_FROM_FVB_THIS(This); - - DEBUG ((DEBUG_BLKIO, "FvbEraseBlocks()\n")); - - Status = EFI_SUCCESS; - - // Detect WriteDisabled state - if (Instance->Media.ReadOnly == TRUE) { - // Firmware volume is in WriteDisabled state - DEBUG ((EFI_D_ERROR, "FvbEraseBlocks: ERROR - Device is in WriteDisabled state.\n")); - return EFI_ACCESS_DENIED; - } - - // Before erasing, check the entire list of parameters to ensure all specified blocks are valid - - VA_START (Args, This); - do { - // Get the Lba from which we start erasing - StartingLba = VA_ARG (Args, EFI_LBA); - - // Have we reached the end of the list? - if (StartingLba == EFI_LBA_LIST_TERMINATOR) { - //Exit the while loop - break; - } - - // How many Lba blocks are we requested to erase? - NumOfLba = VA_ARG (Args, UINTN); - - // All blocks must be within range - DEBUG (( - DEBUG_BLKIO, - "FvbEraseBlocks: Check if: ( StartingLba=%ld + NumOfLba=%Lu - 1 ) > LastBlock=%ld.\n", - Instance->StartLba + StartingLba, - (UINT64)NumOfLba, - Instance->Media.LastBlock - )); - if ((NumOfLba == 0) || ((Instance->StartLba + StartingLba + NumOfLba - 1) > Instance->Media.LastBlock)) { - VA_END (Args); - DEBUG ((EFI_D_ERROR, "FvbEraseBlocks: ERROR - Lba range goes past the last Lba.\n")); - Status = EFI_INVALID_PARAMETER; - goto EXIT; - } - } while (TRUE); - VA_END (Args); - - // - // To get here, all must be ok, so start erasing - // - VA_START (Args, This); - do { - // Get the Lba from which we start erasing - StartingLba = VA_ARG (Args, EFI_LBA); - - // Have we reached the end of the list? - if (StartingLba == EFI_LBA_LIST_TERMINATOR) { - // Exit the while loop - break; - } - - // How many Lba blocks are we requested to erase? - NumOfLba = VA_ARG (Args, UINTN); - - // Go through each one and erase it - while (NumOfLba > 0) { - - // Get the physical address of Lba to erase - BlockAddress = GET_NOR_BLOCK_ADDRESS ( - Instance->RegionBaseAddress, - Instance->StartLba + StartingLba, - Instance->Media.BlockSize - ); - - // Erase it - DEBUG ((DEBUG_BLKIO, "FvbEraseBlocks: Erasing Lba=%ld @ 0x%08x.\n", Instance->StartLba + StartingLba, BlockAddress)); - Status = NorFlashUnlockAndEraseSingleBlock (Instance, BlockAddress); - if (EFI_ERROR(Status)) { - VA_END (Args); - Status = EFI_DEVICE_ERROR; - goto EXIT; - } - - // Move to the next Lba - StartingLba++; - NumOfLba--; - } - } while (TRUE); - VA_END (Args); - -EXIT: - return Status; -} - -/** - Fixup internal data so that EFI can be call in virtual mode. - Call the passed in Child Notify event and convert any pointers in - lib to virtual mode. - - @param[in] Event The Event that is being processed - @param[in] Context Event Context -**/ -VOID -EFIAPI -FvbVirtualNotifyEvent ( - IN EFI_EVENT Event, - IN VOID *Context - ) -{ - EfiConvertPointer (0x0, (VOID**)&mFlashNvStorageVariableBase); - return; -} - -EFI_STATUS -EFIAPI -NorFlashFvbInitialize ( - IN NOR_FLASH_INSTANCE* Instance - ) -{ - EFI_STATUS Status; - UINT32 FvbNumLba; - EFI_BOOT_MODE BootMode; - UINTN RuntimeMmioRegionSize; - - DEBUG((DEBUG_BLKIO,"NorFlashFvbInitialize\n")); - ASSERT((Instance != NULL)); - - // - // Declare the Non-Volatile storage as EFI_MEMORY_RUNTIME - // - - // Note: all the NOR Flash region needs to be reserved into the UEFI Runtime memory; - // even if we only use the small block region at the top of the NOR Flash. - // The reason is when the NOR Flash memory is set into program mode, the command - // is written as the base of the flash region (ie: Instance->DeviceBaseAddress) - RuntimeMmioRegionSize = (Instance->RegionBaseAddress - Instance->DeviceBaseAddress) + Instance->Size; - - Status = gDS->AddMemorySpace ( - EfiGcdMemoryTypeMemoryMappedIo, - Instance->DeviceBaseAddress, RuntimeMmioRegionSize, - EFI_MEMORY_UC | EFI_MEMORY_RUNTIME - ); - ASSERT_EFI_ERROR (Status); - - Status = gDS->SetMemorySpaceAttributes ( - Instance->DeviceBaseAddress, RuntimeMmioRegionSize, - EFI_MEMORY_UC | EFI_MEMORY_RUNTIME); - ASSERT_EFI_ERROR (Status); - - mFlashNvStorageVariableBase = PcdGet32 (PcdFlashNvStorageVariableBase); - - // Set the index of the first LBA for the FVB - Instance->StartLba = (PcdGet32 (PcdFlashNvStorageVariableBase) - Instance->RegionBaseAddress) / Instance->Media.BlockSize; - - BootMode = GetBootModeHob (); - if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) { - Status = EFI_INVALID_PARAMETER; - } else { - // Determine if there is a valid header at the beginning of the NorFlash - Status = ValidateFvHeader (Instance); - } - - // Install the Default FVB header if required - if (EFI_ERROR(Status)) { - // There is no valid header, so time to install one. - DEBUG ((EFI_D_INFO, "%a: The FVB Header is not valid.\n", __FUNCTION__)); - DEBUG ((EFI_D_INFO, "%a: Installing a correct one for this volume.\n", - __FUNCTION__)); - - // Erase all the NorFlash that is reserved for variable storage - FvbNumLba = (PcdGet32(PcdFlashNvStorageVariableSize) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) + PcdGet32(PcdFlashNvStorageFtwSpareSize)) / Instance->Media.BlockSize; - - Status = FvbEraseBlocks (&Instance->FvbProtocol, (EFI_LBA)0, FvbNumLba, EFI_LBA_LIST_TERMINATOR); - if (EFI_ERROR(Status)) { - return Status; - } - - // Install all appropriate headers - Status = InitializeFvAndVariableStoreHeaders (Instance); - if (EFI_ERROR(Status)) { - return Status; - } - } - - // - // The driver implementing the variable read service can now be dispatched; - // the varstore headers are in place. - // - Status = gBS->InstallProtocolInterface ( - &gImageHandle, - &gEdkiiNvVarStoreFormattedGuid, - EFI_NATIVE_INTERFACE, - NULL - ); - ASSERT_EFI_ERROR (Status); - - // - // Register for the virtual address change event - // - Status = gBS->CreateEventEx ( - EVT_NOTIFY_SIGNAL, - TPL_NOTIFY, - FvbVirtualNotifyEvent, - NULL, - &gEfiEventVirtualAddressChangeGuid, - &mFvbVirtualAddrChangeEvent - ); - ASSERT_EFI_ERROR (Status); - - return Status; -}